In business, if you're not moving forward, you're falling behind.

如果你年轻时没有学会思考，那就永远学不会思考。

无论多么艰难，永远不要放弃你的梦想。

Technology in mining isn't about replacing people; it's about empowering them to do better work.

I’m not a one-dimensional person, and I refuse to be put in a box.

I earnestly wish to point out in what true dignity and human happiness consists.

Coal is not just a commodity, it's a commitment to America's future.

Science is not about control. It is about cultivating a perpetual condition of wonder in the face of something that forever grows one step richer and deeper than our latest theory about it.